package com.fay.basic.proxy;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class ProxyFactory {
    // 维护一个目标对象
    private Object target;

    public ProxyFactory(Object target) {
        this.target = target;
    }

    // 给目标对象生成代理对象  JDK中生成代理对象的API，所在包 java.lang.reflect.Proxy  newProxyInstance方法
    public Object getProxyInstance() {
        return Proxy.newProxyInstance(
                target.getClass().getClassLoader(),
                target.getClass().getInterfaces(),
                new InvocationHandler() {
                    @Override
                    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                        System.out.println("开始事务2");
                        Object returnVal = method.invoke(target, args);
                        System.out.println("提交事务2");
                        return returnVal;
                    }
                }
        );
    }
}
